Cord-twisting machine.



G. S. SPENCER. CORD TWISTING MACHINE. APPLIGATION FILED MAR. 21, 19o?.

Patented Jan. 11, 1910.

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G. S. SPENCER. CORD TWISTING MACHINE. APPLIGATIO FILED MAR. 21, 1907.

Patented Jan. 11,1910.

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GEORGE S. SPENCER, OF MOODUS, CONNECTICUT, ASSIGNOR OF ONE-TIIIRD TOFAIRFIELD SMITH, OF BRIDGEPORT, CONNECTICUT.

CORD-TWISTING MACHINE.

Specicaton of Letters Patent.

Patented Jan. 11, 1910.

T o all whom it may concern:

Be it known that l, GEORGE S. SPENCER, a citizenof the United States,and a resident of Moodus, in the county of Middlesex and State ofConnecticut, have invented certain new and useful Improvements in Cord-Twisting Machines, of which the following is a specification.

My invention relates to improvements in cord twisting machines and itconsists in certain details of construction to be more fully set forthin the following specification.

To enable others to understand my invention reference is had to theaccompanying drawings, in which:

Figure l is an elevation of a flier carrier partly in section with thefliers carrying bobbins mounted thereon, and broken View of that portionof the machine for supporting the flier carrier. Fig. 2 is a broken Viewof the machine showing the stretcher cones in operative position; reelto receive the nished cord, and broken view of the spindle connectedwith the flier carrier. Fig. 3 is an enlarged detail view of one of thefliers with a bobbin mounted thereon. Fig. 4 is an enlarged elevationpartly in section of one of the fliers and sectional view of its bobbin.Fig. 5 is a section on line 5 of Fig. 3. Fig. 6 is a detail centralsectional view of the quill for centrally guiding the strands of thecord, and journaling the upper part of the bobbin and maintaining thebobbin in its normal working position. Fig. 7 is a section on line 7 ofFig. 1. Fig. 8 is a detail front elevation of the reel on which thefinished cord is wound. Fig. 9 is an enlarged detail view of one of thecord supports for the reel. 1() is a broken sectional view of thevertical spindle and sectional view of the laying block secured in itsupper end. Fig. 11 is an enlarged detail upper plan View of the layingblock. Fig. 12 is a detail upper plan View of the compress adapted tooverlie the laying block. Fig. 13 is an enlarged detail view of amodified construction of the quill and enlarged broken section view of abobbin. Fig. 14 is an enlarged detail sectional view of the quill shownat Fig. 13. Fig. 15 is an enlarged upper plan view of a detachablesleeve adapted to be used with the quill shown at Figs. 13 and 14. Fig.16 is a detail view.

In the accompanying drawings only such portions of the machine are shownas are necessary to show my improved features and the relation of thesame thereto.

The object of my several improvements is not only to secure an increasedproduction, but also to improve the quality of the cord.

The principal feature of my invention relates to the fliers and themechanism directly and indirectly connected therewith.

Referring to Fig. 1, 1 is a spindle whose lower end is stepped in thebox 2 resting in the lower frame 3. This box is provided with the oilchamber 4 and also the antifriction ballsv 5, the latter supporting thespindle. The upper end of the spindle is journaled in the bushing 6mounted in the boX 7 of the upper frame 8. The spindle is rotatedthrough the medium of the pulley 9 secured thereto. 10 is an upper and11 a lower plate both of which are secured to said spindle.

12 is a pulley journaled on the spindle 1 and is rotatably secured tothe hub portion of the pan 13, which pan is also rotatably mounted onsaid spindle. The upper open mouth of the pan is provided with theintiernal gear 14, as seen more clearly at The spindle 1 carries aplurality of fliers, and as these are all constructed alike, they willbe designated by the same figures of reference. Referring to Figs. 1, 3,4 and 5, said fliers comprise the top plate 15, bottom plate or base 16connected together by the studs 17. 18 is a pin secured in the base ofthe flier whose upper projecting end forms a pintle on which thebobbins, presently to be described, are journaled. The enlarged lowerends 1Sa of said pins are journaled in boxes inserted in the bottomspindle plate 11, one of which, 19, is shown at Fig. 1. 20 is a pinionsecured to the pin 18 of each flier adapted to mesh with the internaland independently driven gear 14 of the pan 13. The upper ends of thefliers are journaled in the upper spindle plate 10 as follows: Referringparticularly to Fig. 4, 15a is a projection or neck of the upper plateof the flier, and 21 is a removable bushing embracing said neck andadapted to be journaled in the upper spindle plate 10 shown at Fig, 1.22 is a locking quill having the small pin 23 projecting therefrom,which pin is adapted to enter the bayonet slot 2% of the neck 15awhereby said quill is temporarily locked to said neck for the purposepresently to be described.

The bobbins are of common construction comprising the core 25 having'the holes 26 therethrough, the lower head 25a and upper head 25". Thelower and reduced end 2tL of the locking quill 22 enters the centralhole at the upper end of the bobbin which, together with the upper endof the lower pin 13, form journals for the bobbin while the shoulder 22bof the locking quill prevents the bobbin rising while rotating on itsjournals. The lower head of the bobbin is rotatably inserted in therecess 1G of the plate 1G of the tlier so that, in case the hole in thelower end of the bobbin becomes enlarged by its rotatable engagement.with the pintle end of the pin 18, this recess will always eentralizethe bobbin. 1f the bobbin is allowed to wabble or have any lateral play,the slack will be taken out of the thread, presently to be described,and cause kinking.

26a is a felt washer on which the lower I head of the bobbin rests inthe recess of the flier.

Each flier carries a bobbin and each bobbin carries a thread to form oneof the strands of which the finished cord is composed. rlhe number oftliers may, of course, be increased or decreased if desired. The threado is unwound from each bobbin, passed about each stud 17 of itsrespective flier, under the hook 27 and is entered into the hole 23(Figs. 1, 3, 4t and 6) in the side of the quill 22 and up out throughthe top of said quill. 1n the upper end of the spindle 1 and just belowthe pulley 9 are the holes 29, one for each dier. These holes (see alsoFig. 10) open into the chamber 30 in the upper end of the spindle. Themouth of the spindle is threaded to receive the threaded end of thelaying block 31. rThis laying block is made tapering and is provided(see also Fig. 11) with the kerfs 32 corresponding` in number to thenumber of bobbins. These kerfs extend nearly to the center of the layingblock so as to leave but a small portion or tip of the block solid atthe top, and 33 is a hole through this tip. The thread or cord strandspass from the respective quills of the fliers and each into itsrespective hole in the side of the spindle 1 and into the chamber 30 ofsaid spindle. From this chamber they extend up each into its respectivekerf of the laying block, and together pass out through the hole 33 ofsaid block. The advantage of making the upper end of the laying blocktapering, and forming the kerfs or threat guide grooves therein, is thatthe upper area of the block is reduced to such an extent that the cordis not abnormally stretched and thereby weakened as would be the et sein proportion to the increase of the area at the top of the block. Inother words, 'the tapered block with its central delivery hole and thethread guide grooves extending close to this central hole reduces thesurface over which the threads are drawn to a minin'nnn, thuseliminating all dragging strain tending to stretch the cord.

Another improvement consists in the vertically adjustable compress 3st,seen at F' 1, 2 and 12. The compress consists of prnig arms having intheir outer meet -ig or clamping faces the various sized holes 35adapted for di [ferent sizes of cord, and 36 is an adjusting); screw toregulate the tension on the. cord passing through any one of theseholes. 3T is a pin adjustably mounted in the projection 33 and securedtherein by the screw 39 and l() is an arin of said pin to which thecompress is secured by the screw 4:1. This adjustable feature of thecompress enables it to be set in the prope 1Dosition relative to thelaying block that will give the best results in laying the strands fordifferent sizes of cord.

iafter the cord leaves the compress (see Fig. 2) it passes around thestretcher cones or twist rolls +12 and 13 and from thence to the reel114 presently to be described. These cones are mounted on the shafts l5and t6 journaled in the standards 4:7 and 43, which shafts are rotatedthrough the medium of the driving pulley 19, pinions 50, 51 and 52 andgear The reel #l/-l is mounted on the short shaft 54C jonrnaled in thestandard 55 and is rotated by the pulley 56. l. have pro vided ay novelfeature in connection with the reel whereby its coi'iteuts can readilybe removed. While l show the reel having four arms. as seen at Fig. 3,it will be understood that any number can be used. rFliese arms arehollow and are adapted thereby to recei've the shank 5T (see also Fig.1)) of the cord holding part of the reel. he shanks are adjustablysupported in the arm by the set screws 53 so that the reel may bereadily increased or decreased in size. The horn 5S.) is integral withthe shank, while the other, 60, is adapted to be turned, as shown by thedotted position at Fig. 9, so that, when the reel is filled, itscontents can readily be removed. The shank 60 of the movable horn isjournaled in a hole in the stationary part of the device. and 61 is apin projecting from this shank through the elongated hole 62 whereby thehorn is allowed to turn without being displaced.

To remove an empty bobbin from the fiier and replace it with a full one,the quill 22 is unlocked and withdrawn far enough to lift the emptybobbin above the pintle end of the pin 1S. The thread from the fullbobbin is tied to the last end of the thread delivered from the bobbinremoved .so-as not to break the continuity of the cord. To do this, thechannel 63 (Figs. l and 6) is formed leading from the entrance hole QSof the quill 22 so that, when the quill is drawn up into the neck 15,the thread will drop into this channel and not interfere with themovement of the quill in said neck, otherwise the thread would be cutoff as soon as the hole 28 was drawn into said neck.

To permit the use of bobbins of different lengths in the same flier, themodification of the quill shown at Figs. 13, 14 and 15 can be used. Inthe other views of the quill, the main body thereof extended down toform the shoulder 22h adapted to prevent the bobbin being lifted duringits rotary movement. This construction permitted only one length ofbobbin being used. |Ihe modification consists in carrying this shoulderback to about the upper edge of the entrance hole 28, which shoulderwill now be designated, in Figs. 13 and 1li, as 22C. Against thisshoulder is placed the shell 64 whose lower end 64a will engage theupper head of the bobbin as shoulder 22h formerly did. The slot oropening 64:1 will be in line with the hole 28 and will serve the samepurpose as the groove 63 shown at Fig. 4. By using shells of differentlengths it will readily be seen that different lengths of bobbins can beused. Except the addition of this shell, the quill remains the same inboth cases. Y

65 (Figs. 1 and 3) is a brake spring secured to one of the flier studswhose free end contacts with the lower head of the bobbin in order tomaintain the same tension on the bobbin. As the thread is beingdelivered from the bobbin the weight of the bobbin is reduced and thetension on the thread is, therefore, Vproportionately less. This isfully counter-acted by the brake spring.

My improved cord twister is also constructed to form the cord about awire core without interfering with the cord twisting mechanism.Referring to Fig. 1, 66 is a reel carrying the fine` wire 67 locatedjust below the spindle 1. The reel is journaled on the projection 68 ofthe hanger 69, and the reduced end of the spring actuated bolt 70 of thehanger 71. Vhen the wire core for the cord is used, the wire is carriedfrom the reel 66 up through the hole 72 of the box 2 and into the smallcentral hole 73 running up through the spindle 1 and into the chamber 30(Fig. 10) where it joins the strands coming in from the fliers andpasses with them up through the laying block 33. In

the twisting process the several strands from the fliers are twisted orlaid about the wire so that, when the cord is completed, the wire willbe in the center thereof to give additional strength to the same.

It will readily be seen by one skilled in the art that my improvedconstruction will not only greatly increase the output over the presentconstructions, but more perfect cord or twine is produced. rIhe mainfeature in making perfect twine and increasing the output of the machineis in keeping the bobbin in place. If, in the present state of the art,the rotary speed of the bobbin is increased beyond a certain point, itwill lift from its seat and cause a slackness in the thread deliveredtherefrom to the detriment of the twine when finished. This I havesuccessfully counteracted by means of the locking quill which not onlykeeps the bobbin in place, but furnishes a short journal for the upperend of the bobbin so that the height of the fiier can be reduced to alittle more than the length of the bobbin.

Another advantage, as above described, is that the fliers areindependently rotated at the same rate of speed by the internal gear111, while they are also revolved about the central spindle 1 and bysaid spindle at a different rate of speed. By thus keeping the Hierspositively rotating at the same speed, and revolving about the spindleat a different speed, the twist in each flier is uniform and thefinished twine will not kink, in other words, is perfectly balanced whenfinished and removed from the Wheel.

Vhile I show a recess in the bottom plate of the flier to centralize thebobbin and keep it in place, I hold myself at liberty to employ any andall well known equivalents of said recess that will give the sameresult.

In place of enlarging the body of the quill to engage with the upper endof the bobbin to prevent the bobbin rising under an increase of speed,the adjustable finger 74 (Fig. 16) could be used, which finger could, ofcourse, overhang either the top or enlarged base of the bobbin. In thisconstruction, the diameter of the quill, outside of the bobbin, could bethe same as the journal portion 22a shown at Fig. 4, and the channel orthread groove 63a could be formed therein.

I-Iaving thus described my invention what I claim as new and desire tosecure by Letters Patent is:

In a cord twisting machine, a flier having upper and lower plates andconnecting studs and adapted to carry bobbins of different lengthshaving central holes longitudinally therethrough, the non-rotatablepintle 18 secured to the lower plate to serve as a journal for the lowerend of the bobbin, the locking quill 22 removably secured to the upperplate, the lower end of said quill forming a Signed at Bridgeport in thecounty of journal for the upper end of the bobbin, Fuirh'elcl and Stateof Connecticut this 14th Said quill having a chamber n its upper end lClay of March A. D. 1907. und the hole 2B leading thereto, and a chan-GEORGE S. SPENCER.

5 nel leading from Said hole to admit the i F.Titnesses:

thread when the quill is drawn up into the F. C. SMITH, upper plete7 forthe purpose set forth. H. D. Hopen.

